Chevrolet Express 2001 — technical service bulletin
Bulletin 040604005 · NHTSA communication 10011128 · issued Jan 1, 2004
Technical service bulletin
communication type
Engine and Engine Cooling
component
2001
model years
2
vehicle entries
Official summary
Service engine soon light illuminated with diagnostic trouble code p0135 or p0155. *tt
Vehicles covered
What a TSB means. Technical service bulletins are repair guidance manufacturers send to dealers — they are not recalls, and repairs are not automatically free (warranty extensions are an exception worth checking). The full document is available via NHTSA’s vehicle lookup.